Psammocindoles A–C: Isolation, Synthesis, and Bioactivity of Indole-γ-lactams from the Sponge <i>Psammocinia vermis</i>
作者:Oh-Seok Kwon、Sungjin Ahn、Ju-eun Jeon、In Guk Park、Tae Hyung Won、Chung J. Sim、Hyeung-geun Park、Dong-Chan Oh、Ki-Bong Oh、Minsoo Noh、Jongheon Shin
DOI:10.1021/acs.orglett.1c01410
日期:2021.6.18
Psammocindoles A–C (1–3), a new class of indole alkaloids, were isolated from a Psammocinia vermis sponge. By combined spectroscopic analyses, the structures of these compounds were determined to be the indole-γ-lactams derived from three amino acid residues. In addition, an enantiomer psammocindole D (4), and the N-lactam isomers isopsammocindoles A–D (5–8) were also synthesized. These natural products
Psammocindoles A–C ( 1 – 3 ) 是一类新的吲哚生物碱,是从Psammocinia vermis海绵中分离出来的。通过组合光谱分析,这些化合物的结构被确定为来自三个氨基酸残基的吲哚-γ-内酰胺。此外,还合成了对映异构体 psammocindole D ( 4 ) 和N-内酰胺异构体 isopsammocindole A–D ( 5 – 8 )。发现这些天然产物和合成类似物可显着刺激人骨髓间充质干细胞中的脂联素分泌。